How to Say "prostitution" in Spanish
The Spanish word for “prostitution” is “prostitución” — B2 level.

Examples
La ley regula la prostitución en algunos países.
The law regulates prostitution in some countries.
Muchos sociólogos estudian las causas de la prostitución.
Many sociologists study the causes of prostitution.
Es necesario combatir la prostitución forzada.
It is necessary to combat forced prostitution.
The '-ción' Rule
Most Spanish words ending in '-ción' are feminine. This means you should always use 'la' or 'una' with this word.
Doing the Action
In Spanish, we don't 'do' prostitution; we 'exercise' it. Use the verb 'ejercer' when talking about someone working in this field.
Gender Error
Mistake: “el prostitución”
Correction: la prostitución (Words ending in -ción are almost always feminine).
Confusing the Act and the Person
Mistake: “Ella es una prostitución.”
Correction: Ella es una prostituta. ('Prostitución' is the concept/act; 'prostituta' is the person).
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